Examlex
Contact of a sperm with signal molecules in the jelly layer of an egg causes the sperm to undergo ________.
Lightning Strike
A natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud.
Sunburn
A form of skin damage that results from excessive exposure to ultraviolet radiation, causing redness, pain, and sometimes blisters.
Boiling Water
The process of heating water until it reaches a temperature at which it bubbles and turns to vapor.
Steam
Water vapor generated by boiling water, used for heating, propulsion, and sterilization among other applications.
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